+
+ /**
+ * @param string $field
+ * @param mixed $value
+ *
+ * @return Comparison
+ */
+ public function memberOf ($field, $value)
+ {
+ return new Comparison($field, Comparison::MEMBER_OF, new Value($value));
+ }
+
+ /**
+ * @param string $field
+ * @param mixed $value
+ *
+ * @return Comparison
+ */
+ public function startsWith($field, $value)
+ {
+ return new Comparison($field, Comparison::STARTS_WITH, new Value($value));
+ }
+
+ /**
+ * @param string $field
+ * @param mixed $value
+ *
+ * @return Comparison
+ */
+ public function endsWith($field, $value)
+ {
+ return new Comparison($field, Comparison::ENDS_WITH, new Value($value));
+ }
+