use some covariance in kleene example
use some covariance in kleene example

guersam/spire,tixxit/spire,codeaudit/spire,kevinmeredith/spire,non/spire,guersam/spire,siddhartha-gadgil/spire,rklaehn/spire,siddhartha-gadgil/spire,kevinmeredith/spire,non/spire,AlecZorab/spire,JackSullivan/spire,codeaudit/spire,JackSullivan/spire,adampingel/spire,AlecZorab/spire,woparry/spire,woparry/spire,adampingel/spire,tixxit/spire,rklaehn/spire