Closes gh-23546

Closes gh-23493

Closes gh-23492

Closes gh-23493

Closes gh-23469

Closes gh-23468

Update `HandlerFunctionDescription` so that it will work with JDK 15.

Closes gh-23442

Closes gh-23439

Closes gh-23415

Closes gh-23384

Closes gh-23185

Closes gh-23374

Closes gh-23371

Closes gh-23194

Closes gh-23333

Closes gh-23332

Closes gh-23331

Ensure that the source jar entry is closed before reading
certificates and code signers from the entry.

gh-19041

Closes gh-23181

Closes gh-23190

Update `JarFileEntries` so that the interface is obtained rather than
the concrete implementation. This allows `JarEntry` values to be used
without causing a ClassCastException.

Closes gh-19041

Closes gh-23269

Closes gh-23278

Closes gh-23277

Closes gh-23276

Closes gh-23275

Closes gh-23274

Closes gh-23273

Closes gh-23272

Closes gh-23271

Closes gh-23270

Closes gh-23268

Closes gh-23267

Closes gh-23266

* pr/19041:
  Polish 'Fix signed jar performance issues'
  Fix signed jar performance issues
  Ignore Visual Studio Code Files

Closes gh-19041