Adding some missing docs

src/ORM/Association.php

@@ -645,6 +645,7 @@ public abstract function type();
  * - fields: List of fields to select from the target table
  * - contain: List of related tables to eager load associated to the target table
  * - strategy: The name of strategy to use for finding target table records
+ * - nestKey: The array key under which results will be found when transforming the row
  *
  * @param array $options
  * @return \Closure

src/ORM/Association/SelectableAssociationTrait.php

@@ -198,6 +198,7 @@ protected abstract function _buildResultMap($fetchQuery, $options);
  * @param \Cake\ORM\Query $fetchQuery the Query used to fetch results
  * @param array $resultMap an array with the foreignKey as keys and
  * the corresponding target table results as value.
+ * @param array $options The options passed to the eagerLoader method
  * @return \Closure
  */
 	protected function _resultInjector($fetchQuery, $resultMap, $options) {