Fix pandas.api.extensions.ExtensionArray.astype

Add 'See Also' section

Author: ivonastojanovic

ci/code_checks.sh

@@ -193,7 +193,6 @@ if [[ -z "$CHECK" || "$CHECK" == "docstrings" ]]; then
         -i "pandas.Timestamp.tzinfo GL08" \
         -i "pandas.Timestamp.value GL08" \
         -i "pandas.Timestamp.year GL08" \
-        -i "pandas.api.extensions.ExtensionArray.astype SA01" \
         -i "pandas.api.extensions.ExtensionArray.dropna RT03,SA01" \
         -i "pandas.api.extensions.ExtensionArray.dtype SA01" \
         -i "pandas.api.extensions.ExtensionArray.duplicated RT03,SA01" \

pandas/core/arrays/base.py

@@ -713,6 +713,16 @@ def astype(self, dtype: AstypeArg, copy: bool = True) -> ArrayLike:
             An ``ExtensionArray`` if ``dtype`` is ``ExtensionDtype``,
             otherwise a Numpy ndarray with ``dtype`` for its dtype.
 
+        See Also
+        --------
+        Series.astype : Cast a Series to a different dtype.
+        DataFrame.astype : Cast a DataFrame to a different dtype.
+        api.extensions.ExtensionArray : Base class for ExtensionArray objects.
+        core.arrays.DatetimeArray._from_sequence : Create a DatetimeArray from a
+            sequence.
+        core.arrays.TimedeltaArray._from_sequence : Create a TimedeltaArray from
+            a sequence.
+
         Examples
         --------
         >>> arr = pd.array([1, 2, 3])