code: protected DehydratedExecutionContext resolveExecutionContext(HttpCommand http, CredentialsContainer cc) {
          return contextResolution.resolveExecutionContext(protocol, http, cc);
      }
docs: Resolves an HttpCommand to an ExecutionContext, which provides contextual
  information to the ExecutionVenue that the command will be executed in.
  
  @param http
  contains the HttpServletRequest from which the contextual
  information is derived
  @return the ExecutionContext, populated with information from the
  HttpCommend