--- /dev/null
+<?php
+namespace Consolidation\OutputFormatters\Exception;
+
+/**
+ * Indicates that the requested format does not exist.
+ */
+class UnknownFieldException extends \Exception
+{
+ public function __construct($field)
+ {
+ $message = "The requested field, '$field', is not defined.";
+ parent::__construct($message, 1);
+ }
+}