Merge pull request #295

Author: jmikola

source/includes/apiargs-MongoDBCollection-common-option.yaml

@@ -36,6 +36,9 @@ type: :php:`MongoDB\\Driver\\ReadConcern <class.mongodb-driver-readconcern>`
 description: |
    :manual:`Read concern </reference/read-concern>` to use for the operation.
    Defaults to the collection's read concern.
+
+   This is not supported for server versions prior to 3.2 and will result in an
+   exception at execution time if used.
 interface: phpmethod
 operation: ~
 optional: true

source/includes/extracts-error.yaml

@@ -29,5 +29,6 @@ content: |
 ref: error-unsupportedexception
 content: |
   :phpclass:`MongoDB\\Exception\\UnsupportedException` if options are used and
-  not supported by the selected server (e.g. ``collation``, ``writeConcern``).
+  not supported by the selected server (e.g. ``collation``, ``readConcern``,
+  ``writeConcern``).
 ...