[code-reflection] RFR: Document quoteOp and quotedOp methods [v7]

[Mourad Abbay]

> Specify the behaviour of quoteOp and quotedOp methods.

Mourad Abbay has updated the pull request incrementally with three additional commits since the last revision:

 - Update Quoted.quoteOp documentation
 - Correct validation in Quoted constructor
 - Don't include duplicate operands / captured values when quoting an operation

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Changes:
  - all: https://git.openjdk.org/babylon/pull/512/files
  - new: https://git.openjdk.org/babylon/pull/512/files/1fcefbcf..34cc6a8f

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=babylon&pr=512&range=06
 - incr: https://webrevs.openjdk.org/?repo=babylon&pr=512&range=05-06

  Stats: 176 lines in 2 files changed: 132 ins; 20 del; 24 mod
  Patch: https://git.openjdk.org/babylon/pull/512.diff
  Fetch: git fetch https://git.openjdk.org/babylon.git pull/512/head:pull/512

PR: https://git.openjdk.org/babylon/pull/512