def get_program(self, program_id: str) -> AbstractProgram:
        """Returns an AbstractProgram for an existing Quantum Engine program.

        Args:
            program_id: Unique ID of the program within the parent project.

        Returns:
            An AbstractProgram for the program.
        """
Returns an AbstractProgram for an existing Quantum Engine program.

        Args:
            program_id: Unique ID of the program within the parent project.

        Returns:
            An AbstractProgram for the program.
        
cirq-google/cirq_google/engine/abstract_local_processor.py