public HdfsMongoDbJob collectionName(String collectionName) {
		Assert.hasText(collectionName, "collectionName should not be empty nor null");
		this.collectionName = collectionName;
		return this;
	}
Sets the name of the collection where the data will be written.
@param collectionName The name of the collection
@return The current instance of the HdfsMongoDbJob
spring-xd-test-fixtures/src/main/java/org/springframework/xd/test/fixtures/HdfsMongoDbJob.java