com.sap.portal.services.api.connectorgateway.IConnectorGatewayService error

Hi,

I am trying to do some performance optimization on internal J2EE application (customized par file). I have downloaded the file and imported it into my NWDS. I find an error as -

This compilation unit indirectly references the missing type com.sap.portal.services.api.connectorgateway.IConnectorGatewayService. (typically some required class file is referencing a type outside the class file)

I have tried to find the class file using jar class finder without any help. Kindly help me to resolve this error.

regds,

S Rudra