code: public TransportApiResult<Agency> getAgency(String agencyId)
      {
      	if (Extensions.isNullOrWhiteSpace(agencyId))
      	{
      		throw new IllegalArgumentException("AgencyId is required.");
      	}
  
      	return TransportApiClientCalls.getAgency(tokenComponent, settings, agencyId);
      }
docs: Gets a specific agency.
  
  @param  agencyId  		The id of the agency you want to get.
  @return      			An agency.