# File lib/fog/aws/requests/rds/modify_db_parameter_group.rb, line 20
        def modify_db_parameter_group(group_name, parameters)
          
          parameter_names = []
          parameter_values = []
          parameter_apply_methods = []
          
          parameters.each do |parameter|
            parameter_names.push(parameter['ParameterName'])
            parameter_values.push(parameter['ParameterValue'])
            parameter_apply_methods.push(parameter['ApplyMethod'])
          end
          params = {}
          params.merge!(Fog::AWS.indexed_param('Parameters.member.%d.ParameterName', parameter_names))
          params.merge!(Fog::AWS.indexed_param('Parameters.member.%d.ParameterValue', parameter_values))
          params.merge!(Fog::AWS.indexed_param('Parameters.member.%d.ApplyMethod', parameter_apply_methods))
          
          request({
            'Action'  => 'ModifyDBParameterGroup',
            'DBParameterGroupName' => group_name,
            
            :parser   => Fog::Parsers::AWS::RDS::ModifyDbParameterGroup.new
          }.merge(params))
        end