message: Rename variables to use camelCase
diff: @@ -56,9 +56,7 @@ sendMessage("Hello");`;
  const code = `console.log("Hello");
  sendMessage("Hello");`;
  const selection = Selection.cursorAt(0, 15);
  - askUser = jest.fn(([_, this_occurrence]) =>
  - Promise.resolve(this_occurrence)
  - );
  + askUser = jest.fn(([_, thisOccurrence]) => Promise.resolve(thisOccurrence));
  const result = await doExtractVariable(code, selection);
  @@ -72,7 +70,7 @@ sendMessage("Hello");`;
  const code = `console.log("Hello");
  sendMessage("Hello");`;
  const selection = Selection.cursorAt(0, 15);
  - askUser = jest.fn(([all_occurrence]) => Promise.resolve(all_occurrence));
  + askUser = jest.fn(([allOccurrences]) => Promise.resolve(allOccurrences));
  const result = await doExtractVariable(code, selection);
  @@ -86,7 +84,7 @@ sendMessage(hello);`;
  const code = `console.log("Hello");
  sendMessage("Hello");`;
  const selection = Selection.cursorAt(1, 15);
  - askUser = jest.fn(([all_occurrence]) => Promise.resolve(all_occurrence));
  + askUser = jest.fn(([allOccurrences]) => Promise.resolve(allOccurrences));
  const result = await doExtractVariable(code, selection);
  @@ -104,7 +102,7 @@ sendMessage(hello);`;
  sendMessage("Hello");`;
  const selection = Selection.cursorAt(1, 18);
  - askUser = jest.fn(([all_occurrence]) => Promise.resolve(all_occurrence));
  + askUser = jest.fn(([allOccurrences]) => Promise.resolve(allOccurrences));
  const result = await doExtractVariable(code, selection);
  @@ -306,7 +304,7 @@ sendMessage(extracted);`
  }
  ],
  async ({ code, selection = Selection.cursorAt(0, 12), expected }) => {
  - askUser = jest.fn(([all_occurrence]) => Promise.resolve(all_occurrence));
  + askUser = jest.fn(([allOccurrences]) => Promise.resolve(allOccurrences));
  const result = await doExtractVariable(code, selection);
  