The position of the first returned row within the tree.
Reads a row object from the table, from which any subscribed column can be read.
the position or key to access
the row at the given location
Reads a specific cell from the table, by row key and column.
the row in the table to get data from
the column to read
the value in the table
The server-specified Format to use for the cell at the given position.
the row to read
the column to read
a Format instance with any server-specified details
Similar to ViewportData, but with additional properties to reflect the tree structure.