Continuation Method is Not Getting Called In Salesforce APEX

Please check the below points

• Check whether this class is linked with any visual force page/lightning components,if it's not linked to any one of this then it will not executed.

• If it's in visual force page please check whether your adding reRender attribute on the <apex:commandButton> or <apex:outputlink> tag where your invoking the Continuation.

Hope this helps you..Enjoy..!