code: def testResolveInputGraphRef_InvalidGraphId(self):
      x = self.parse_input_spec(
          """
        input_graph_ref {
          graph_id: "non_existential_graph"
        }
      """
      )
      node_inputs = pipeline_pb2.NodeInputs(inputs={"x": x})
  
      with self.assertRaises(exceptions.FailedPreconditionError):
          node_inputs_resolver.resolve(self._mlmd_handle, node_inputs)
  
imports: from typing import Set
  from unittest import mock
  import tensorflow
  from tfx.orchestration.portable.input_resolution import exceptions
  from tfx.orchestration.portable.input_resolution import input_graph_resolver
  from tfx.orchestration.portable.input_resolution import node_inputs_resolver
  from tfx.orchestration.portable.input_resolution import partition_utils
  from tfx.orchestration.portable.input_resolution import channel_resolver
  from tfx.proto.orchestration import pipeline_pb2
  import tfx.types
  from tfx.types import channel_utils
  from tfx.utils import test_case_utils
  from google.protobuf import text_format
label_desc: Use image node_id 14 for calling the NodeInputsResolverTest obj's underlying member method code with example usage: obj.testResolveInputGraphRef_InvalidGraphId() without return types