import org.commonmark.parser.block.BlockStart; //导入依赖的package包/类
@Override
public BlockStart tryStart(ParserState state, MatchedBlockParser matchedBlockParser) {
  CharSequence line = state.getLine();
  CharSequence previousLine = matchedBlockParser.getParagraphContent();
  if (previousLine != null && previousLine.toString().contains("|")) {
    line = line.subSequence(state.getIndex(), line.length());
    ImmutableList<Alignment> columnAlignments = parseHeaderDivider(line);
    if (!columnAlignments.isEmpty()) {
      return BlockStart.of(new TableBlockParser(previousLine, columnAlignments))
          .atIndex(state.getIndex())
          .replaceActiveBlockParser();
    }
  }

  return BlockStart.none();
}
 

import org.commonmark.parser.block.BlockStart; //导入依赖的package包/类
@Override
public BlockStart atIndex(int newIndex) {
    this.newIndex = newIndex;
    return this;
}
 

import org.commonmark.parser.block.BlockStart; //导入依赖的package包/类
@Override
public BlockStart atColumn(int newColumn) {
    this.newColumn = newColumn;
    return this;
}
 

import org.commonmark.parser.block.BlockStart; //导入依赖的package包/类
@Override
public BlockStart replaceActiveBlockParser() {
    this.replaceActiveBlockParser = true;
    return this;
}