function processMaybeBlock(node, baseToken) {
    const firstToken = getFirstAndLastTokens(node).firstToken
    setOffset(firstToken, isOpeningBraceToken(firstToken) ? 0 : 1, baseToken)
  }
Process the given node as body.
The body node maybe a block statement or an expression node.
@param {ASTNode} node The body node to process.
@param {Token} baseToken The base token.
@returns {void}