inSetterContext abstract method
Return true
if this expression is computing a left-hand value (that is,
if this expression is in a context where the operator '[]=' will be
invoked).
Note that inGetterContext and inSetterContext are not opposites, nor
are they mutually exclusive. In other words, it is possible for both
methods to return true
when invoked on the same node.
Implementation
// TODO(brianwilkerson) Convert this to a getter.
bool inSetterContext();