protected final @Nullable ASTNode getFirstContentNode() {
    ASTNode node = getNode().getFirstChildNode();
    while (node != null && (
      node.getElementType() == YAMLTokenTypes.TAG || YAMLElementTypes.BLANK_ELEMENTS.contains(node.getElementType()))) {
      node = node.getTreeNext();
    }
    return node;
  }
protected final @Nullable ASTNode getFirstContentNode()