Attempt to log into Synapse — attempt

Attempt to log into Synapse. Will first try using authentication credentials written to a .synapseConfig file. If that fails, will try using any credentials passed to the function. Will return NULL if not all attempts failed.

attempt_login(syn, ...)

Arguments

syn	Synapse client object
...	Synapse credentials, such as `authToken` or `email` with a `password` or `apiKey`.