public HdfsMongoDbJob idField(String idField) {
		Assert.hasText(idField, "IdField should not be empty nor null");
		this.idField = idField;
		return this;
	}
Sets the idField for the data that will be inserted by this job
@param idField The column that represents the id field;
@return The current instance of HdfsMongoDbJob
spring-xd-test-fixtures/src/main/java/org/springframework/xd/test/fixtures/HdfsMongoDbJob.java