try {
     [tryStatements]
  } catch(exception) {
     [catchStatements]
  } finally {
     [finallyStatements]}

• tryStatements are statements where an error can occur. Optional.
• exception is any variable name. The initial value of exception is the value of the thrown error. Required.
• catchStatements are statements to handle errors occurring in the above tryStatements. Optional.
• finallyStatements are statements that are unconditionally executed after all other error processing has occurred. Optional.

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