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communityFilter - for admins only. If set to false (default true) then admins can see all sources even if they are from communities that the admin user is not a member of.
userFilter - if set then only shows sources owned by the user, otherwise shows all sources for which the user has permission. Default: false for admins, true for non-admins
stripped - if set to true (default false), then the source is stripped down to its bare metadata for transmission/parsing efficiency. Individual "source/get" calls must then be made to retrieve the full source.
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