A string indicating the study ID from which to pull data. If no study ID, will
guess the study ID based on your URL and inform. Only 1 study ID can be passed. If mutations/cna from
more than 1 study needed, see sample_study_pairs
sample_id
a vector of sample IDs (character)
sample_study_pairs
A dataframe with columns: sample_id, study_id and molecular_profile_id (optional). Variations in capitalization of column names are accepted.
This can be used in place of sample_id, study_id, molecular_profile_id arguments above if you
need to pull samples from several different studies at once. If passed this will take overwrite sample_id, study_id, molecular_profile_id if also passed.
base_url
The database URL to query
If NULL will default to URL set with set_cbioportal_db(<your_db>)