question: sets the value of the usage property . concode_field_sep ExtRefChecking checking concode_elem_sep TypeCtDocExtRefUsage usage concode_elem_sep String label concode_elem_sep boolean modifiable concode_field_sep void setChecking concode_elem_sep String getLabel concode_elem_sep ExtRefChecking getChecking concode_elem_sep void setLabel concode_elem_sep void setModifiable concode_elem_sep boolean isModifiable concode_elem_sep TypeCtDocExtRefUsage getUsage
target: void function ( TypeCtDocExtRefUsage arg0 ) { this . usage = arg0 ; }