IExecutionSession
Represents a session object for current execution.
            
File path for the current workspace in execution. Could be null or
            empty string if workspace is not yet saved.
            
Returns list of session parameter keys available in the session.
            
Returns session parameter value for the given parameter name.
            
A helper method to resolve the given file path. The given file path
            will be resolved by searching into the current workspace, core and 
            host application installation folders etc.