Swift: Add some more qldoc.

Author: geoffw0

swift/ql/.generated.list

@@ -371,7 +371,7 @@ ql/lib/codeql/swift/elements/type/WeakStorageTypeConstructor.qll d88b031ef44d6de
 ql/lib/codeql/swift/elements.qll 82b69a48b7afffeb97cafd9fdc57af96b672e21879580a6cfc3bae2a49bc2c40 82b69a48b7afffeb97cafd9fdc57af96b672e21879580a6cfc3bae2a49bc2c40
 ql/lib/codeql/swift/generated/AstNode.qll 02ca56d82801f942ae6265c6079d92ccafdf6b532f6bcebd98a04029ddf696e4 6216fda240e45bd4302fa0cf0f08f5f945418b144659264cdda84622b0420aa2
 ql/lib/codeql/swift/generated/AvailabilityInfo.qll 996a5cfadf7ca049122a1d1a1a9eb680d6a625ce28ede5504b172eabe7640fd2 4fe6e0325ff021a576fcd004730115ffaa60a2d9020420c7d4a1baa498067b60
-ql/lib/codeql/swift/generated/AvailabilitySpec.qll b7b1d14410927b80d11c80a507b6dfec72da01c403ee5db8ed2fe62efb821187 3aa96ba7cc7d8bf26a0c622130dcb79d24fcd346f9a3134afb08862c0fc18a64
+ql/lib/codeql/swift/generated/AvailabilitySpec.qll fb1255f91bb5e41ad4e9c675a2efbc50d0fb366ea2de68ab7eebd177b0795309 144e0c2e7d6c62ecee43325f7f26dcf437881edf0b75cc1bc898c6c4b61fdeaf
 ql/lib/codeql/swift/generated/Callable.qll 042b4f975f1e416c48b5bf26bee257549eec13fb262f11025375560f75a73582 0434788243bc54e48fec49e4cce93509b9a2333f2079dacb6ffc12c972853540
 ql/lib/codeql/swift/generated/Comment.qll f58b49f6e68c21f87c51e2ff84c8a64b09286d733e86f70d67d3a98fe6260bd6 975bbb599a2a7adc35179f6ae06d9cbc56ea8a03b972ef2ee87604834bc6deb1
 ql/lib/codeql/swift/generated/DbFile.qll a49b2a2cb2788cb49c861ebcd458b8daead7b15adb19c3a9f4db3bf39a0051fc a49b2a2cb2788cb49c861ebcd458b8daead7b15adb19c3a9f4db3bf39a0051fc

swift/ql/lib/codeql/swift/generated/AvailabilitySpec.qll

@@ -4,5 +4,11 @@ private import codeql.swift.generated.Raw
 import codeql.swift.elements.AstNode
 
 module Generated {
+  /**
+   * An availability spec, that is, part of an `AvailabilityInfo` condition. For example `iOS 12` and `*` in:
+   * ```
+   * if #available(iOS 12, *)
+   * ```
+   */
   class AvailabilitySpec extends Synth::TAvailabilitySpec, AstNode { }
 }

swift/schema.py

@@ -812,6 +812,12 @@ class CaseLabelItem(AstNode):
     guard: optional[Expr] | child
 
 class AvailabilitySpec(AstNode):
+    """
+    An availability spec, that is, part of an `AvailabilityInfo` condition. For example `iOS 12` and `*` in:
+    ```
+    if #available(iOS 12, *)
+    ```
+    """
     pass
 
 class PlatformVersionAvailabilitySpec(AvailabilitySpec):