field_tag { field: 2 }
                            field_tag { index: 1505 }
                            field_tag { field: 5 }
                            field_tag { map_key { ui32: 123 } }
                          )pb"));
  RepeatedPtrField<FieldIndex> field_tags_sub;
  field_tags_sub.CopyFrom(field_tags);
  field_tags_sub.DeleteSubrange(2, 2);

        if (a.at(i).has_map_key()) {
          const ::tensorflow::proto_splitter::FieldIndex_MapKey& key =
              b.at(i).map_key();
          const ::tensorflow::proto_splitter::FieldIndex_MapKey& chunked_key =
              a.at(i).map_key();
          switch (key.type_case()) {
            case ::tensorflow::proto_splitter::FieldIndex::MapKey::TypeCase::kS:

    from fastapi import Depends, FastAPI
    from fastapi.security import APIKeyQuery

    app = FastAPI()

    query_scheme = APIKeyQuery(name="api_key")


    @app.get("/items/")
    async def read_items(api_key: str = Depends(query_scheme)):
        return {"api_key": api_key}
    ```
    """

    def __init__(
        self,
        *,
        name: Annotated[
            str,

            assert !v.toLowerCase().contains(value.toLowerCase())
        }

        where:
        value << ['GRADLE_ENTERPRISE_ACCESS_KEY',
                  "api_key",
                  "access_key",
                  "apikey",
                  "accesskey",
                  "password",
                  "token",
                  "credential",
                  "auth"]
    }

    }

    protected T parseMap(@MapKey("group") @Nullable String group,
                         @MapKey("name") @Nullable String name,
                         @MapKey("version") @Nullable String version,
                         @MapKey("configuration") @Nullable String configuration,
                         @MapKey("ext") @Nullable String ext,
                         @MapKey("classifier") @Nullable String classifier) {

            visitor.candidate("Maps").example("[group: 'org.group', name: 'capability', version: '1.0']");
        }

        protected Capability parseMap(@MapKey("group") String group,
                                      @MapKey("name") String name,
                                      @MapKey("version") String version) {
            return new DefaultImmutableCapability(group, name, version);
        }
    }

			sPortNumber := strconv.Itoa(int(server.GetPort().GetNumber()))
			mapKey := genGatewayMapKey(sGWSelector, sPortNumber)
			if _, exits := gwConflictingMap[mapKey]; !exits {
				objMap := make(map[string][]string)
				objMap[gwName] = server.GetHosts()
				gwConflictingMap[mapKey] = objMap
			} else {
				gwConflictingMap[mapKey][gwName] = server.GetHosts()
			}
		}
		return true
	})

        }

        @SuppressWarnings("unused")
        protected NativeLibraryRequirement parseMap(
            @MapKey("library") String libraryName,
            @MapKey("project") @Nullable String projectPath,
            @MapKey("linkage") @Nullable String linkage
        ) {
            return new ProjectNativeLibraryRequirement(projectPath, libraryName, linkage);
        }
    }

            visitor.example("Maps, e.g. [group: 'org.gradle', name:'gradle-core', version: '1.0'].");
        }

        protected ModuleComponentSelector parseMap(@MapKey("group") String group, @MapKey("name") String name, @MapKey("version") String version) {
            return newSelector(DefaultModuleIdentifier.newId(group, name), DefaultImmutableVersionConstraint.of(version));
        }
    }

    originalObj:
      mapKey:
        nilKey: null
        nonNilKey: foo
    expectedWithNull:
      mapKey:
        nilKey: null
    expectedWithoutNull:
      mapKey:
        nonNilKey: foo
  - description: nested map that all subkeys are nil
    originalObj:
      mapKey:
        nilKey1: null
        nilKey2: null
    expectedWithNull:
      mapKey:
        nilKey1: null
        nilKey2: null