/*
Changes a node from array

@param {Node} node
@param value {string}
@param {string} yaml

@returns {string}
function changeArrayElement(node, value, yaml) {
  var indentedValue = indent(value, node.start_mark.column);

  // find index of DASH(`-`) character for this array
  var index = node.start_mark.pointer;
  while (index > 0 && yaml[index] !== DASH) {
    index--;
  }

  return yaml.substr(0, index + 2) + indentedValue.substr(node.start_mark.column) + yaml.substring(getNodeEndMark(node).pointer);
}