public Entity withEntityId(String entityId) {
        setEntityId(entityId);
        return this;
    }
<p>
The entity ID. If you do not know the <code>entityId</code>, you can pass <code>unknown</code>, which is
areserved string literal.
</p>

@param entityId
       The entity ID. If you do not know the <code>entityId</code>, you can pass <code>unknown</code>, which is
       areserved string literal.
@return Returns a reference to this object so that method calls can be chained together.
aws-java-sdk-frauddetector/src/main/java/com/amazonaws/services/frauddetector/model/Entity.java