TextSpan (ion-java 1.10.1 API)

```
public interface TextSpan
```
Exposes the positions of a Span in the form of one-based line and column numbers within the source text stream.
WARNING: This interface should not be implemented or extended by code outside of this library.
As with all spans, positions lie between values, and when the start and finish positions are equal, the span is said to be empty.
To get one of these from a Span, use asFacet(TextSpan.class) or one of the helpers from Spans.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`long`	`getFinishColumn()`	Returns the column number of this span's finish position, counting from one.
`long`	`getFinishLine()`	Returns the line number of this span's finish position, counting from one.
`long`	`getStartColumn()`	Returns the column number of this span's start position, counting from one.
`long`	`getStartLine()`	Returns the line number of this span's start position, counting from one.

- Method Detail
  - getStartLine
```
long getStartLine()
```
    Returns the line number of this span's start position, counting from one.
  - getStartColumn
```
long getStartColumn()
```
    Returns the column number of this span's start position, counting from one.
  - getFinishLine
```
long getFinishLine()
```
    Returns the line number of this span's finish position, counting from one. In most cases, the finish position is implicit and this method returns -1. That's since in general (notably for containers) the finish offset can't be determined without significant effort to parse to the end of the value.
  - getFinishColumn
```
long getFinishColumn()
```
    Returns the column number of this span's finish position, counting from one. In most cases, the finish position is implicit and this method returns -1. That's since in general (notably for containers) the finish offset can't be determined without significant effort to parse to the end of the value.