Top level of the API, provides access to API implementations.

Common semantics within javax.tools.diagnostics

Collections

1. Unless specifically declared all Collection classes and their associated Iterators are read only. Attempts to add ,remove or replace items within the collection will result in a {@link java.lang.UnsupportedOperationException} being thrown
2. Ordered Collections returned by this API are required to have a consistent and repeatable ordering across calls.

Object equality

Instances of classes defined by this API should only be tested for equality by using the {@link java.lang.Object#equals()} method.