Returns a record after applying transformations specified in list {1} to {0}. One or more fields may be transformed at a ...

Returns a record after applying transformations specified in list {1} to {0}.
    One or more fields may be transformed at a given time. 
      
In the case of a single field being transformed, {1} is expected to be a list with two items. The first item in {1} specifies a field name, and the second item in {1} specifies the function to be used for transformation. For example, {{"Quantity", Number.FromText}}
In the case of a multiple fields being transformed, {1} is expected to be a list of lists, where each inner list is a pair of field name and transformation operation. For example, {{{{"Quantity",Number.FromText}},{{"UnitPrice", Number.FromText}}}}