Merged in feature/from-pantheon (pull request #16)

code from pantheon

* code from pantheon

wp/wp-content/plugins/wordpress-seo/src/exceptions/missing-method.php

@@ -0,0 +1,30 @@
+<?php
+
+namespace Yoast\WP\SEO\Exceptions;
+
+use Exception;
+
+/**
+ * Exception to use when a method does not exist.
+ */
+class Missing_Method extends Exception {
+
+	/**
+	 * Creates exception for a method that does not exist in a class.
+	 *
+	 * @param string $method     The method that does not exist.
+	 * @param string $class_name The class name.
+	 *
+	 * @return static Instance of the exception.
+	 */
+	public static function for_class( $method, $class_name ) {
+		return new static(
+			\sprintf(
+				/* translators: %1$s expands to the method name. %2$s expands to the class name */
+				\__( 'Method %1$s() does not exist in class %2$s', 'wordpress-seo' ),
+				$method,
+				$class_name
+			)
+		);
+	}
+}