foo is NOT null 
null_foo is null 
osc is NOT null 
null_osc is null 
"getObj is not null" :(string)
"getNullObj is null" :(string)
"if (object)" :(string)
"if (user)" :(string)
"!User" :(string)
"!Object" :(string)
"User || User" :(string)
"Object || Object" :(string)
"Object || User" :(string)
"User || Object" :(string)
"User && User" :(string)
"Object && Object" :(string)
"User && Object" :(string)
"User && Object" :(string)
