Retrieve the physical extent of the source construct referenced by
the given cursor.
The extent of a cursor starts with the file/line/column pointing at the
first character within the source construct that the cursor refers to and
ends with the last character within that source construct. For a
declaration, the extent covers the declaration itself. For a reference,
the extent covers the location of the reference (e.g., where the referenced
entity was actually used).
Retrieve the physical extent of the source construct referenced by the given cursor.
The extent of a cursor starts with the file/line/column pointing at the first character within the source construct that the cursor refers to and ends with the last character within that source construct. For a declaration, the extent covers the declaration itself. For a reference, the extent covers the location of the reference (e.g., where the referenced entity was actually used).