public String getCausingEntity() {
        return this.causingEntity;
    }
<p>
The identity of the entity that triggered this change. This entity is a member of the group that's specified by
the <code>ChangeSource</code> field. For example, if you modified the value of the <code>KeyPairName</code>
parameter, the <code>CausingEntity</code> is the name of the parameter (<code>KeyPairName</code>).
</p>
<p>
If the <code>ChangeSource</code> value is <code>DirectModification</code>, no value is given for
<code>CausingEntity</code>.
</p>

@return The identity of the entity that triggered this change. This entity is a member of the group that's
        specified by the <code>ChangeSource</code> field. For example, if you modified the value of the
        <code>KeyPairName</code> parameter, the <code>CausingEntity</code> is the name of the parameter (
        <code>KeyPairName</code>).</p>
        <p>
        If the <code>ChangeSource</code> value is <code>DirectModification</code>, no value is given for
        <code>CausingEntity</code>.
aws-java-sdk-cloudformation/src/main/java/com/amazonaws/services/cloudformation/model/ResourceChangeDetail.java