Reduce warnings by generating JavaDoc

[timtebeek]

What's changed?

Also generate a line of JavaDoc for classes.

What's your motivation?

Reduce warnings on use in error-prone-support.

Any additional context

• Detect and skip unsupported templates #5

[timtebeek]

This class and method are accessed from the PatternBuilder. I don't expect issues with the reduced visibility, but figured ask for a second opinion just in case.

rewrite-templating/src/main/java/org/openrewrite/java/template/internal/PatternBuilder.java

Lines 30 to 39 in 022373a

	public JavaTemplate.Builder build(JavaVisitor<?> owner) {
	try {
	Class<?> templateClass = Class.forName(owner.getClass().getName() + "_" + name, true,
	owner.getClass().getClassLoader());
	Method getTemplate = templateClass.getDeclaredMethod("getTemplate");
	return (JavaTemplate.Builder) getTemplate.invoke(null);
	} catch (ClassNotFoundException | NoSuchMethodException | InvocationTargetException |
	IllegalAccessException e) {
	throw new RuntimeException(e);
	}

[timtebeek]

Alternatively we had plans in the past to merge this into RefasterTemplateProcessor, which might make sense now too as I don't think we've come to use these templates separately.

[timtebeek]

Just confirmed to work against apache/maven-build-cache-extension with a local build; figured that makes this a low impact enough change that we can see this through and at worst refine on the main branch later.