JDK-8282411: Add useful predicates to ElementKind

[jddarcy]

Discussion from a recent review in javadoc, adding some more functionality to ElementKind predicates.

Please also review the CSR: https://bugs.openjdk.java.net/browse/JDK-8282461

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Progress

• Change must not contain extraneous whitespace
• Commit message must refer to an issue
• Change must be properly reviewed
• Change requires a CSR request to be approved

Issues

• JDK-8282411: Add useful predicates to ElementKind
• JDK-8282461: Add useful predicates to ElementKind (CSR)

Reviewers

• Pavel Rappo (@pavelrappo - Reviewer) ⚠️ Review applies to 7d423d6

Reviewing

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Update a local copy of the PR:
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[openjdk]

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[mlbridge]

Webrevs

• 01: Full - Incremental (c72518b5)
• 00: Full (7d423d65)

[pavelrappo]

Other than unusual indentation in isExecutable and isInitializer, looks good. Thanks!

[openjdk]

@jddarcy This change now passes all automated pre-integration checks.

ℹ️ This project also has non-automated pre-integration requirements. Please see the file CONTRIBUTING.md for details.

After integration, the commit message for the final commit will be:

8282411: Add useful predicates to ElementKind

Reviewed-by: prappo

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[jddarcy]

/integrate

[openjdk]

Going to push as commit 732d891.

[openjdk]

@jddarcy Pushed as commit 732d891.

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