In java, what's the relationship between field and class?
<p>Please refer to this API. The link is:</p>

<p><a href="http://download.carrot2.org/stable/javadoc/org/carrot2/text/preprocessing/pipeline/CompletePreprocessingPipeline.html" rel="nofollow">http://download.carrot2.org/stable/javadoc/org/carrot2/text/preprocessing/pipeline/CompletePreprocessingPipeline.html</a></p>

<pre>Class CompletePreprocessingPipeline

Field Summary
 DocumentAssigner   documentAssigner
          Document assigner used by the algorithm, contains bindable attributes.</pre>

<p>Then I found some example using completePreprocessingPipeline this way</p>

<pre><code>completePreprocessingPipeline().documentAssigner()exactPhraseAssignment(true)
</code></pre>

<p>I do not understand the relationship between "completePreprocessingPipeline" and "documentAssigner" in terms of "field vs.class".</p>
