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    "linkReferences": {}
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              "text": " @dev Sets `amount` as the allowance of `spender` over the caller's tokens.\n Returns a boolean value indicating whether the operation succeeded.\n IMPORTANT: Beware that changing an allowance with this method brings the risk\n that someone may use both the old and the new allowance by unfortunate\n transaction ordering. One possible solution to mitigate this race\n condition is to first reduce the spender's allowance to 0 and set the\n desired value afterwards:\n https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729\n Emits an {Approval} event."
            },
            "functionSelector": "095ea7b3",
            "id": 755,
            "implemented": false,
            "kind": "function",
            "modifiers": [],
            "name": "approve",
            "nameLocation": "2283:7:2",
            "nodeType": "FunctionDefinition",
            "parameters": {
              "id": 751,
              "nodeType": "ParameterList",
              "parameters": [
                {
                  "constant": false,
                  "id": 748,
                  "mutability": "mutable",
                  "name": "spender",
                  "nameLocation": "2299:7:2",
                  "nodeType": "VariableDeclaration",
                  "scope": 755,
                  "src": "2291:15:2",
                  "stateVariable": false,
                  "storageLocation": "default",
                  "typeDescriptions": {
                    "typeIdentifier": "t_address",
                    "typeString": "address"
                  },
                  "typeName": {
                    "id": 747,
                    "name": "address",
                    "nodeType": "ElementaryTypeName",
                    "src": "2291:7:2",
                    "stateMutability": "nonpayable",
                    "typeDescriptions": {
                      "typeIdentifier": "t_address",
                      "typeString": "address"
                    }
                  },
                  "visibility": "internal"
                },
                {
                  "constant": false,
                  "id": 750,
                  "mutability": "mutable",
                  "name": "amount",
                  "nameLocation": "2316:6:2",
                  "nodeType": "VariableDeclaration",
                  "scope": 755,
                  "src": "2308:14:2",
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                  "storageLocation": "default",
                  "typeDescriptions": {
                    "typeIdentifier": "t_uint256",
                    "typeString": "uint256"
                  },
                  "typeName": {
                    "id": 749,
                    "name": "uint256",
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                    "src": "2308:7:2",
                    "typeDescriptions": {
                      "typeIdentifier": "t_uint256",
                      "typeString": "uint256"
                    }
                  },
                  "visibility": "internal"
                }
              ],
              "src": "2290:33:2"
            },
            "returnParameters": {
              "id": 754,
              "nodeType": "ParameterList",
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                  "constant": false,
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                  "nameLocation": "-1:-1:-1",
                  "nodeType": "VariableDeclaration",
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                  "src": "2342:4:2",
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              ],
              "src": "2341:6:2"
            },
            "scope": 768,
            "src": "2274:74:2",
            "stateMutability": "nonpayable",
            "virtual": false,
            "visibility": "external"
          },
          {
            "documentation": {
              "id": 756,
              "nodeType": "StructuredDocumentation",
              "src": "2354:287:2",
              "text": " @dev Moves `amount` tokens from `from` to `to` using the\n allowance mechanism. `amount` is then deducted from the caller's\n allowance.\n Returns a boolean value indicating whether the operation succeeded.\n Emits a {Transfer} event."
            },
            "functionSelector": "23b872dd",
            "id": 767,
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            "kind": "function",
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            "name": "transferFrom",
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            "nodeType": "FunctionDefinition",
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              "nodeType": "ParameterList",
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                  "constant": false,
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                  "name": "from",
                  "nameLocation": "2685:4:2",
                  "nodeType": "VariableDeclaration",
                  "scope": 767,
                  "src": "2677:12:2",
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                  "storageLocation": "default",
                  "typeDescriptions": {
                    "typeIdentifier": "t_address",
                    "typeString": "address"
                  },
                  "typeName": {
                    "id": 757,
                    "name": "address",
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                    "src": "2677:7:2",
                    "stateMutability": "nonpayable",
                    "typeDescriptions": {
                      "typeIdentifier": "t_address",
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                  },
                  "visibility": "internal"
                },
                {
                  "constant": false,
                  "id": 760,
                  "mutability": "mutable",
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                  "nameLocation": "2707:2:2",
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                  "src": "2699:10:2",
                  "stateVariable": false,
                  "storageLocation": "default",
                  "typeDescriptions": {
                    "typeIdentifier": "t_address",
                    "typeString": "address"
                  },
                  "typeName": {
                    "id": 759,
                    "name": "address",
                    "nodeType": "ElementaryTypeName",
                    "src": "2699:7:2",
                    "stateMutability": "nonpayable",
                    "typeDescriptions": {
                      "typeIdentifier": "t_address",
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                    }
                  },
                  "visibility": "internal"
                },
                {
                  "constant": false,
                  "id": 762,
                  "mutability": "mutable",
                  "name": "amount",
                  "nameLocation": "2727:6:2",
                  "nodeType": "VariableDeclaration",
                  "scope": 767,
                  "src": "2719:14:2",
                  "stateVariable": false,
                  "storageLocation": "default",
                  "typeDescriptions": {
                    "typeIdentifier": "t_uint256",
                    "typeString": "uint256"
                  },
                  "typeName": {
                    "id": 761,
                    "name": "uint256",
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                      "typeIdentifier": "t_uint256",
                      "typeString": "uint256"
                    }
                  },
                  "visibility": "internal"
                }
              ],
              "src": "2667:72:2"
            },
            "returnParameters": {
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              "nodeType": "ParameterList",
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                  "constant": false,
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                  "name": "",
                  "nameLocation": "-1:-1:-1",
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                  "src": "2758:4:2",
                  "stateVariable": false,
                  "storageLocation": "default",
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                  "typeName": {
                    "id": 764,
                    "name": "bool",
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                      "typeIdentifier": "t_bool",
                      "typeString": "bool"
                    }
                  },
                  "visibility": "internal"
                }
              ],
              "src": "2757:6:2"
            },
            "scope": 768,
            "src": "2646:118:2",
            "stateMutability": "nonpayable",
            "virtual": false,
            "visibility": "external"
          }
        ],
        "scope": 769,
        "src": "202:2564:2",
        "usedErrors": []
      }
    ],
    "src": "106:2661:2"
  }
}