Added sequence converters

src/cpl_query/iterable/iterable.py

@@ -54,7 +54,7 @@ class Iterable(IterableABC):
         if _value is None:
             raise ArgumentNoneException(ExceptionArgument.value)
 
-        return _value in self
+        return self.where(lambda x: x == _value).count() > 0
 
     def count(self, _func: Callable = None) -> int:
         if self is None:

src/cpl_query/iterable/iterable_abc.py

@@ -57,3 +57,13 @@ class IterableABC(SequenceABC, QueryableABC):
             self.append(value)
 
         return self
+
+    def to_enumerable(self) -> 'EnumerableABC':
+        r"""Converts :class: `cpl_query.iterable.iterable_abc.IterableABC` to :class: `cpl_query.enumerable.enumerable_abc.EnumerableABC`
+
+        Returns
+        -------
+            :class: `cpl_query.enumerable.enumerable_abc.EnumerableABC`
+        """
+        from cpl_query.enumerable.enumerable import Enumerable
+        return Enumerable(self._type, self.to_list())