public EntityRecognizerMetadata withEntityTypes(EntityRecognizerMetadataEntityTypesListItem... entityTypes) {
        if (this.entityTypes == null) {
            setEntityTypes(new java.util.ArrayList<EntityRecognizerMetadataEntityTypesListItem>(entityTypes.length));
        }
        for (EntityRecognizerMetadataEntityTypesListItem ele : entityTypes) {
            this.entityTypes.add(ele);
        }
        return this;
    }
<p>
Entity types from the metadata of an entity recognizer.
</p>
<p>
<b>NOTE:</b> This method appends the values to the existing list (if any). Use
{@link #setEntityTypes(java.util.Collection)} or {@link #withEntityTypes(java.util.Collection)} if you want to
override the existing values.
</p>

@param entityTypes
       Entity types from the metadata of an entity recognizer.
@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