@ModuleOption("match columns with update")
	public void setMatchColumns(String matchColumns) {
		this.matchColumns = matchColumns;
	}
Config options for gpfdist sink.

@author Janne Valkealahti
extensions/spring-xd-extension-gpfdist/src/main/java/org/springframework/xd/greenplum/config/GPFDistSinkOptionsMetadata.java