2. The computer-implemented method of claim 1 wherein determining whether the first parser is able to parse the nested document comprises determining whether the first field comprising the nested document is of a data type that is associated with the first content type and different than the second content type.
5. The computer-implemented method of claim 2 further comprising: selecting the second parser based on the second content type of the nested document if the data type of the first field comprising the nested document is not associated with the first content type; and parsing the nested document using the second parser.