public void setSingular(String singular) {
        this.singular = singular;
    }
<p>
The operation to be performed on the provided Singular source fields.
</p>

@param singular
       The operation to be performed on the provided Singular source fields.
@see SingularConnectorOperator
aws-java-sdk-appflow/src/main/java/com/amazonaws/services/appflow/model/ConnectorOperator.java