Field getField(int colIndex) {
		try {
			return fields[colIndex].newField();
		}
		catch (Exception e) {
			throw new AssertException(e.getMessage());
		}
	}
Get a new instance of a data Field object for the specified column.
@param colIndex field index
@return new Field object suitable for data reading/writing.
Ghidra/Framework/DB/src/main/java/db/Schema.java