Get meta data for the Flex Query API and initialize the API.
Examples
# \donttest{
rem <- rem_init()
#> parsing api/parties/
#> parsing api/years/single
#> parsing api/dimension-instances/category
#> parsing api/dimension-instances/classification
#> parsing api/dimension-instances/measure
#> parsing api/dimension-instances/gas
#> parsing api/conversion/fq
#> parsing api/variables/fq/annexOne
#> parsing api/variables/fq/nonAnnexOne
names(rem)
#> [1] "parties" "years" "categories"
#> [4] "classification" "measures" "gas"
#> [7] "units" "variables" "duplicate_variableIds"
#> [10] ".req"
# }