code: func (c *Client) GetInstitutions(count, offset int) (resp GetInstitutionsResponse, err error) {
  	if count == 0 {
  		count = 50
  	}
  
  	jsonBody, err := json.Marshal(getInstitutionsRequest{
  		ClientID: c.clientID,
  		Secret:   c.secret,
  		Count:    count,
  		Offset:   offset,
  	})
  
  	if err != nil {
  		return resp, err
  	}
  
  	err = c.Call("/institutions/get", jsonBody, &resp)
  	return resp, err
  }
docs: // GetInstitutions returns information for all institutions supported by Plaid.
  // See https://plaid.com/docs/api/#all-institutions.