[SPARK-49249][SPARK-49122][SQL] CONNECT] Add missing doc for the `addArtifact` API
### What changes were proposed in this pull request?
This PR is a follow-up of https://github.com/apache/spark/pull/47631 which adds a docstring to the `addArtifact` API. The doc was missing from the previous PR.
### Why are the changes needed?
The previous PR missed a docstring.
### Does this PR introduce _any_ user-facing change?
No.
### How was this patch tested?
Not needed.
### Was this patch authored or co-authored using generative AI tooling?
No.
Closes #47974 from xupefei/add-artifact-doc.
Authored-by: Paddy Xu <xupaddy@gmail.com>
Signed-off-by: Herman van Hovell <herman@databricks.com>
diff --git a/sql/api/src/main/scala/org/apache/spark/sql/api/SparkSession.scala b/sql/api/src/main/scala/org/apache/spark/sql/api/SparkSession.scala
index d156aba..0c173d9 100644
--- a/sql/api/src/main/scala/org/apache/spark/sql/api/SparkSession.scala
+++ b/sql/api/src/main/scala/org/apache/spark/sql/api/SparkSession.scala
@@ -333,6 +333,24 @@
@Experimental
def addArtifact(uri: URI): Unit
+ /**
+ * Add a single in-memory artifact to the session while preserving the directory structure
+ * specified by `target` under the session's working directory of that particular file
+ * extension.
+ *
+ * Supported target file extensions are .jar and .class.
+ *
+ * ==Example==
+ * {{{
+ * addArtifact(bytesBar, "foo/bar.class")
+ * addArtifact(bytesFlat, "flat.class")
+ * // Directory structure of the session's working directory for class files would look like:
+ * // ${WORKING_DIR_FOR_CLASS_FILES}/flat.class
+ * // ${WORKING_DIR_FOR_CLASS_FILES}/foo/bar.class
+ * }}}
+ *
+ * @since 4.0.0
+ */
@Experimental
def addArtifact(bytes: Array[Byte], target: String): Unit
