(popElement) : Add an assert.
(popElement) : Add an assert.
google-code-export/es-operating-system,ericmckean/es-operating-system,josejamilena/es-operating-system,berkus/es-operating-system,josejamilena/es-operating-system,google-code-export/es-operating-system,berkus/es-operating-system,google-code-export/es-operating-system,ericmckean/es-operating-system,ericmckean/es-operating-system,ericmckean/es-operating-system,berkus/es-operating-system,google-code-export/es-operating-system,ericmckean/es-operating-system,berkus/es-operating-system,josejamilena/es-operating-system,berkus/es-operating-system,ericmckean/es-operating-system,ericmckean/es-operating-system,josejamilena/es-operating-system,josejamilena/es-operating-system,josejamilena/es-operating-system,berkus/es-operating-system,google-code-export/es-operating-system,google-code-export/es-operating-system,berkus/es-operating-system,josejamilena/es-operating-system,google-code-export/es-operating-system