Extension Operations

`pgm.createExtension( extension )`

Install postgres extension(s) - postgres docs

Arguments:

extension [string or array of strings] - name(s) of extensions to install
options [object] - options:
- ifNotExists [boolean] - default false
- schema [string] - the name of the schema in which to install the extension's objects

Aliases: addExtension Reverse Operation: dropExtension

`pgm.dropExtension( extension )`

Un-install postgres extension(s) - postgres docs

Arguments:

extension [string or array of strings] - name(s) of extensions to install
drop_options [object] - options:
- ifExists [boolean] - drops extension only if it exists
- cascade [boolean] - drops also dependent objects