public EntityRecognizerMetadata withNumberOfTestDocuments(Integer numberOfTestDocuments) {
        setNumberOfTestDocuments(numberOfTestDocuments);
        return this;
    }
<p>
The number of documents in the input data that were used to test the entity recognizer. Typically this is 10 to
20 percent of the input documents.
</p>

@param numberOfTestDocuments
       The number of documents in the input data that were used to test the entity recognizer. Typically this is
       10 to 20 percent of the input documents.
@return Returns a reference to this object so that method calls can be chained together.
aws-java-sdk-comprehend/src/main/java/com/amazonaws/services/comprehend/model/EntityRecognizerMetadata.java