type BatchJobYamlErr struct {
	line, col int
	msg       string
}

// message returns the error message excluding line, col information.
// Intended to be used in unit tests.
func (b BatchJobYamlErr) message() string {
	return b.msg
}

// Error implements Error interface
func (b BatchJobYamlErr) Error() string {
	return fmt.Sprintf("%s\n Hint: error near line: %d, col: %d", b.msg, b.line, b.col)
}

    ImmutableMap.Builder<C, ImmutableMap<R, V>> columnBuilder =
        new ImmutableMap.Builder<>(columns.size());
    for (Entry<C, Map<R, V>> col : columns.entrySet()) {
      columnBuilder.put(col.getKey(), ImmutableMap.copyOf(col.getValue()));
    }
    this.columnMap = columnBuilder.buildOrThrow();
  }

  @Override
  public ImmutableMap<C, Map<R, V>> columnMap() {
    // Casts without copying.

		}
		return nil, errParquetParsingError(err)
	}

	kvs := jstream.KVS{}
	for _, col := range pr.r.Columns() {
		var value any
		if v, ok := nextRow[col.FlatName()]; ok {
			value, err = convertFromAnnotation(col.Element(), v)
			if err != nil {
				return nil, errParquetParsingError(err)
			}
		}
		kvs = append(kvs, jstream.KV{Key: col.FlatName(), Value: value})
	}

	// Reuse destination if we can.

		ExpectedVars: []interface{}{"jinzhu", "jinzhu"},
	}, {
		SQL:    "?",
		Vars:   []interface{}{clause.Column{Table: "table", Name: "col"}},
		Result: "`table`.`col`",
	}, {
		SQL:    "?",
		Vars:   []interface{}{clause.Column{Table: "table", Name: "col", Raw: true}},
		Result: "table.col",
	}, {
		SQL:    "?",
		Vars:   []interface{}{clause.Column{Table: "table", Name: clause.PrimaryKey, Raw: true}},
		Result: "table.id",

    ImmutableMap.Builder<C, ImmutableMap<R, V>> columnBuilder =
        new ImmutableMap.Builder<>(columns.size());
    for (Entry<C, Map<R, V>> col : columns.entrySet()) {
      columnBuilder.put(col.getKey(), ImmutableMap.copyOf(col.getValue()));
    }
    this.columnMap = columnBuilder.buildOrThrow();
  }

  @Override
  public ImmutableMap<C, Map<R, V>> columnMap() {
    // Casts without copying.

	case BatchJobExpireDeleted:
		if len(ef.Tags) > 0 || len(ef.Metadata) > 0 {
			return BatchJobYamlErr{
				line: ef.line,
				col:  ef.col,
				msg:  "delete type filter can't have tags or metadata",
			}
		}
	default:
		return BatchJobYamlErr{
			line: ef.line,
			col:  ef.col,
			msg:  "invalid batch-expire type",
		}
	}

	for _, tag := range ef.Tags {
		if err := tag.Validate(); err != nil {

}

func (s *Stack) SetBase(base *src.PosBase) {
	s.tr[len(s.tr)-1].SetBase(base)
}

func (s *Stack) Line() int {
	return s.tr[len(s.tr)-1].Line()
}

func (s *Stack) Col() int {
	return s.tr[len(s.tr)-1].Col()
}

func (s *Stack) Close() { // Unused.

                    "added to classpath",
                    "includesDependencies",
                    ""
                };

                int i = 0;
                for (String col : cols) {
                    assertEquals(expected[i++], col.trim(), "Wrong column header");
                }
            } else if (line.startsWith("|")) {
                String[] cols = line.split("\\|");

	// Cannot happen because we only have slices of already-scanned text,
	// but be prepared.
	s.base = base
}

func (s *Slice) Line() int {
	return s.line
}

func (s *Slice) Col() int {
	// TODO: Col is only called when defining a macro and all it cares about is increasing
	// position to discover whether there is a blank before the parenthesis.
	// We only get here if defining a macro inside a macro.

	Base() *src.PosBase
	// SetBase sets the position base.
	SetBase(*src.PosBase)
	// Line reports the source line number of the token.
	Line() int
	// Col reports the source column number of the token.
	Col() int
	// Close does any teardown required.
	Close()
}

// A Token is a scan token plus its string value.
// A macro is stored as a sequence of Tokens with spaces stripped.