Optional
nodeIndex at the end of the token related to this context, even if it is behind the cursor position.
Points at the first character after the last token.
If the context performs completion for a token that doesn't exist yet, it is equal to the offset
.
Index at the start of the token related to this context.
If the context performs completion for a token that doesn't exist yet, it is equal to the offset
.
Index of the requested completed position.