Document Apache HTTP client methods

[jonathanpeppers]

Summary

• Documents authoritative request behavior, parameters, results, and namespace purpose for Org.Apache.Http.Client.Methods.
• Leaves constructor summaries blank where the archived source provides no behavioral documentation; this PR therefore references, rather than closes, Add XML documentation for Org.Apache.Http.Client.Methods #299.

Refs #299

Sources

• Android 6.0 behavior changes: Apache HTTP client removal
• AOSP archived Apache HTTP client method sources (android-5.1.1_r38)
• Existing per-type Android reference links and AOSP CC BY 2.5 attribution in the scoped XML files.

Validation

• Parsed all 11 scoped type XML files and ns-Org.Apache.Http.Client.Methods.xml with PowerShell's XML parser.
• Confirmed zero literal To be added. placeholders in the scoped files.
• Confirmed CRLF line endings and a clean git diff --check.

[Copilot]

Pull request overview

This PR improves the generated XML documentation for the Org.Apache.Http.Client.Methods namespace by replacing placeholder docs with authoritative descriptions of request behavior, parameters, and return values, and by adding a namespace-level summary and reference link.

Changes:

• Replaces To be added. placeholders across Apache HTTP client request types (e.g., method/URI/aborted state docs, constructor param docs).
• Documents key request-base behaviors (e.g., cloning behavior, request line/protocol version, abort/callback hooks).
• Adds namespace documentation (ns-Org.Apache.Http.Client.Methods.xml) including an Android reference link and attribution.

Reviewed changes

Copilot reviewed 12 out of 12 changed files in this pull request and generated 12 comments.

Show a summary per file

File	Description
docs/xml/Org.Apache.Http.Client.Methods/IHttpUriRequest.xml	Fills in placeholder property value docs (aborted/method/URI).
docs/xml/Org.Apache.Http.Client.Methods/IAbortableHttpRequest.xml	Documents abort-related callback parameters.
docs/xml/Org.Apache.Http.Client.Methods/HttpTrace.xml	Adds constructor param docs and fills placeholder property docs.
docs/xml/Org.Apache.Http.Client.Methods/HttpRequestBase.xml	Replaces multiple placeholders for core request-base behavior (clone/aborted/method/version/request line/URI + abort hooks).
docs/xml/Org.Apache.Http.Client.Methods/HttpPut.xml	Adds constructor param docs and fills placeholder property docs.
docs/xml/Org.Apache.Http.Client.Methods/HttpPost.xml	Adds constructor param docs and fills placeholder property docs.
docs/xml/Org.Apache.Http.Client.Methods/HttpOptions.xml	Adds constructor param docs, documents Allow-header parsing, and fills placeholder property docs.
docs/xml/Org.Apache.Http.Client.Methods/HttpHead.xml	Adds constructor param docs and fills placeholder property docs.
docs/xml/Org.Apache.Http.Client.Methods/HttpGet.xml	Adds constructor param docs and fills placeholder property docs.
docs/xml/Org.Apache.Http.Client.Methods/HttpEntityEnclosingRequestBase.xml	Documents enclosed entity property and expect-continue behavior + fills placeholder property docs.
docs/xml/Org.Apache.Http.Client.Methods/HttpDelete.xml	Adds constructor param docs and fills placeholder property docs.
docs/xml/ns-Org.Apache.Http.Client.Methods.xml	Adds namespace summary plus Android reference link and attribution.

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[jonathanpeppers]

@dalexsoto review