export declare function expressionStartsAtResourceRoot(expression: string | undefined, resourceType: string): boolean;
export declare function getThisCastType(expression: string): string | null;
export declare function choiceContextHasOnlyOtherTypes(ctx: any, choiceElementName: string, castType: string): boolean;
export declare function hasUnresolvableChoiceTypes(ctx: any, expression: string): boolean;
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