Extract underlying dataSource:
Extract the data underlying an S3 vector object, i.e. the underlying (named) atomic vector, data frame, or list.
A vector or object implementing
vec_data()returns unstructured data. The only attributes preserved are names, dims, and dimnames.
Currently, due to the underlying memory architecture of R, this creates a full copy of the data for atomic vectors.
Methods must return a vector type. Records and data frames will be processed rowwise.