@ModuleOption("the default input type for this module is Tuple")
	public void setInputType(String inputType) {
	}
TODO: Currrently an annotated setter is required for all options by {@link PojoModuleOptionsMetadata}. In this
case, the --inputType option is not actually set here. Instead it is processed by the
{@link ModuleTypeConversionPluginMetadataResolver}.

@param inputType
spring-xd-dirt/src/test/java/org/springframework/xd/dirt/modules/metadata/TestTupleProcessorOptionsMetadata.java