public TestRunner setInMemoryMetadataFactory(InMemoryMetadataStoreFactory inMemoryMetadataStoreFactory) {
    Preconditions.checkNotNull(inMemoryMetadataStoreFactory);
    this.inMemoryMetadataStoreFactory = inMemoryMetadataStoreFactory;
    return this;
  }
Set an InMemory MetadataStoreFactory to be used by {@link LocalApplicationRunner}

@param inMemoryMetadataStoreFactory InMemoryMetadataStoreFactory
@return this {@link TestRunner}
samza-test/src/main/java/org/apache/samza/test/framework/TestRunner.java