# S3 method for rcer_raw_metadata
as.data.frame(x, ...)# S3 method for rcer_raw_record
as.data.frame(x, ...)
# S3 method for rcer_raw_project
as.data.frame(x, ...)
# S3 method for rcer_raw_user
as.data.frame(x, ...)
# S3 method for rcer_raw_metadata
as.data.table(x, ...)
# S3 method for rcer_raw_record
as.data.table(x, ...)
# S3 method for rcer_raw_project
as.data.table(x, ...)
# S3 method for rcer_raw_user
as.data.table(x, ...)