| void | RTXMetadata. addColumn(RTXColumn column) | Add a new column with the name and type of an existing column, the column
 will be added to the end of this metadata (ie. | 
| void | RTXMetadata. addColumn(String columnName,
         RTXType columnType) | Add a new column with the specified name and type, the column will be added
 to the end of this metadata. | 
| void | RTXMetadata. addColumn(String columnName,
         String columnType) | Add a new column with the specified name and type, the column will be added
 to the end of this metadata. | 
| void | RTXMetadata. addColumn(String columnName,
         String columnDescription,
         RTXType columnType) | Add a new column with the specified name, description and type, the column
 will be added to the end of this metadata. | 
| void | RTXWriter. addColumn(RTXColumn column) |  | 
| void | RTXWriter. addColumn(String columnName,
         RTXType columnType) |  | 
| void | RTXWriter. addColumn(String columnName,
         String columnType) |  | 
| void | RTXMetadata. addColumns(Collection<RTXColumn> newColumns) | Add a new columns based on the input columns, the columns will be added in
 the order that they occur in the list, to the end of this metadata (ie. | 
| void | RTXWriter. addColumns(Collection<RTXColumn> newColumns) |  | 
| void | RTXMetadata. addSource(RTXSource source) | Add a source. | 
| void | RTXMetadata. addSource(RTXSource source,
         String prefix) | Add a source. | 
| void | RTXWriter. addSource(RTXSource source) |  | 
| void | RTXMetadata. addSources(Collection<RTXSource> newSources) | Add multiple sources | 
| void | RTXMetadata. addSources(Collection<RTXSource> newSources,
          String prefix) | Add multiple sources with a prefix. | 
| void | RTXWriter. addSources(Collection<RTXSource> sources,
          String prefix) |  | 
| RTXRow | RTXReader. next() |  |