def METHOD_NAME():
    description = (
        """Converts 3D field from spherical coordinates to cartesian coordinates."""
    )
    spec = Specification(
        description=description,
        map_input_pin_spec={
            0: PinSpecification(
                name="fields_container",
                type_names=["fields_container"],
                optional=False,
                document="""""",
            ),
        },
        map_output_pin_spec={
            0: PinSpecification(
                name="fields_container",
                type_names=["fields_container"],
                optional=False,
                document="""""",
            ),
        },
    )
    return spec