Method hasDeclaration

libsolidity/ast/Types.h:1481–1481

		return *m_declaration;
	}
	bool hasDeclaration() const { return !!m_declaration; }
	/// @returns true if the result of this function only depends on its arguments,
	/// does not modify the state and is a compile-time constant.
	/// Currently, this will only return true for internal functions like keccak and ecrecover.