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author Dan Albert <danalbert@google.com> 2023-10-31 19:25:45 +0000
committer Dan Albert <danalbert@google.com> 2023-10-31 19:25:45 +0000
commit69454c2938ea30afbd21d86c93179a14afbeab0b (patch)
tree76c34890c31d0537acaacda773798102ab565dde
parent78567011cfdfe491565c1560544a8d104002aeff (diff)
Improve the docs about when to use introduced.
Bug: None Test: None Change-Id: I90eeb24c0fce8f17576f6e4c98e04aa2855a4e8c
-rw-r--r--docs/map_files.md17
1 files changed, 11 insertions, 6 deletions
diff --git a/docs/map_files.md b/docs/map_files.md
index 35e8cbbfc..c5ccdb62d 100644
--- a/docs/map_files.md
+++ b/docs/map_files.md
@@ -88,12 +88,17 @@ but is useful when developing APIs for an unknown future release.
### introduced
-Indicates the version in which an API was first introduced. For example,
-`introduced=21` specifies that the API was first added (or first made public) in
-API level 21. This tag can be applied to either a version definition or an
-individual symbol. If applied to a version, all symbols contained in the version
-will have the tag applied. An `introduced` tag on a symbol overrides the value
-set for the version, if both are defined.
+Indicates the version in which an API was first introduced in the NDK. For
+example, `introduced=21` specifies that the API was first added (or first made
+public) in API level 21. This tag can be applied to either a version definition
+or an individual symbol. If applied to a version, all symbols contained in the
+version will have the tag applied. An `introduced` tag on a symbol overrides the
+value set for the version, if both are defined.
+
+The `introduced` tag should only be used with NDK APIs. Other API surface tags
+(such as `apex`) will override `introduced`. APIs that are in the NDK should
+never use tags like `apex`, and APIs that are not in the NDK should never use
+`introduced`.
Note: The map file alone does not contain all the information needed to
determine which API level an API was added in. The `first_version` property of