Apologies if this is in the docs, but I haven't been able to find it. When configuring a plugin with an environment variable, how do we know when to use one or two underscores between the plugin name and the configuration setting?
Example:
•
TAP_POSTGRES__SELECT
•
TAP_POSTGRES_DATABASE
Is it related to whether it's a setting common to all plugins vs when it's a plugin-specific setting?