How to use Query String in Gitlab REST API

How to Use GitLab
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How to use Query String in Gitlab REST API

I found Gitlab API from here GetProjectMembers

It says we can use query string in API.

GET /projects/:id/members/all

Attribute   Type    Required    Description
query      string         no    A query string to search for members

So my question is how to query it like ‘access_level=50’ or some how.

I am a really fresh man for this and thank you in advance. :blush:
Stackoverflow link