Add isTupleType documentation

Author: nicolasstucki

compiler/src/dotty/tools/dotc/core/Definitions.scala

@@ -1462,6 +1462,10 @@ class Definitions {
   def isPolymorphicAfterErasure(sym: Symbol): Boolean =
      (sym eq Any_isInstanceOf) || (sym eq Any_asInstanceOf) || (sym eq Object_synchronized)
 
+  /** Is this type a `TupleN` type?
+   *
+   * @return true if the dealiased type of `self` is `TupleN[T1, T2, ..., Tn]`
+   */
   def isTupleType(tp: Type)(using Context): Boolean = {
     val arity = tp.dealias.argInfos.length
     arity <= MaxTupleArity && TupleType(arity) != null && tp.isRef(TupleType(arity).symbol)

library/src/scala/quoted/Quotes.scala

@@ -2526,10 +2526,10 @@ trait Quotes { self: runtime.QuoteUnpickler & runtime.QuoteMatching =>
         */
         def isDependentFunctionType: Boolean
 
-        /** Is this type a tuple type?
-        *
-        * @return true if the dealiased type of `self` without refinement is `TupleN[T1, T2, ..., Tn]`
-        */
+        /** Is this type a `TupleN` type?
+         *
+         * @return true if the dealiased type of `self` is `TupleN[T1, T2, ..., Tn]`
+         */
         def isTupleType: Boolean
 
         /** The type <this . sym>, reduced if possible */