Non-static method cannot be referenced from a static context

[Dishant Sharma]

I was creating a confluence server plugin. I want to use the ‘getGroupsWithPermissions’ that belongs to the ‘SpacePermissionManager’ package. But, when I tried to use the fucntion, it gave me the below error:

Non-static method 'getGroupsWithPermissions(com.atlassian.confluence.spaces.@org.checkerframework.checker.nullness.qual.Nullable Space)' cannot be referenced from a static context

How can I solve this one?

[Lucas Modzelewski _Lumo_]

This seems to tackle the similar problem: https://stackoverflow.com/questions/4922145/non-static-method-cannot-be-referenced-from-a-static-context-error 

Please remember to close this when/if you get more precise answer from developers community: https://community.developer.atlassian.com/t/non-static-method-cannot-be-referenced-from-a-static-context/64785