CallExpressionType: {
    funcCall: string | MemberExpressionType;
    type: "call_expression";
    args?: ArgumentsType[];
}

Represents a call expression in LangChain. It has a type property set to 'call_expression', a funcCall property which can be a string or a MemberExpressionType, and an optional args property which is an array of ArgumentsType.

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