code: function checkParams(typeCode, params, errCb){
  		_.assertFunction(errCb)
  		
  		var viewSchema = schema._byCode[typeCode]
  		var failed = false
  		//console.log(JSON.stringify(viewSchema))
  		var ps = viewSchema.viewSchema.params
  		for(var i=0;i<ps.length;++i){
  			var t = ps[i]
  			if(t.type.type === 'object'){
  				if(!_.isString(params[i]) && !_.isObject(params[i]) && isNaN(params[i])){
  					console.log('failed to parse: ' + viewSchema.name + ' ' + JSON.stringify(params))
  					//throw new Error('object id is NaN in param ' + i)
  					var e = new Error('object id is NaN in param ' + i)
  					e.code = 'InvalidParamType'
  					errCb(e)
  					return false
  				}
  				/*if(!objectState.isTopLevelObject(params[i])){
  					var e = new Error('parameters include an invalid object id') 
  					e.code = 'InvalidParamId'
  					errCb(e)
  					return false
  				}else */if(objectState.isDeleted(params[i])){
  					var e = new Error('parameters include a object id for a deleted object') 
  					e.code = 'InvalidParamId'
  					errCb(e)
  					return false
  				}/*else{
  					//console.log('param is fine: ' + params[i])
  				}*/
  			}
  		}
  		return true
  	}
docs: _.assertFunction(broadcaster.output.listenForNew)