问如何将`sbt`配置为不显示警告"Warning private default argument in object * is never used“

EN

scalac -Xlint:help
Enable recommended warnings
  adapted-args            An argument list was modified to match the receiver.
  nullary-unit            `def f: Unit` looks like an accessor; add parens to look side-effecting.
  inaccessible            Warn about inaccessible types in method signatures.
  infer-any               A type argument was inferred as Any.
  missing-interpolator    A string literal appears to be missing an interpolator id.
  doc-detached            When running scaladoc, warn if a doc comment is discarded.
  private-shadow          A private field (or class parameter) shadows a superclass field.
  type-parameter-shadow   A local type parameter shadows a type already in scope.
  poly-implicit-overload  Parameterized overloaded implicit methods are not visible as view bounds.
  option-implicit         Option.apply used an implicit view.
  delayedinit-select      Selecting member of DelayedInit.
  package-object-classes  Class or object defined in package object.
  stars-align             In a pattern, a sequence wildcard `_*` should match all of a repeated parameter.
  strict-unsealed-patmat  Pattern match on an unsealed class without a catch-all.
  constant                Evaluation of a constant arithmetic expression resulted in an error.
  unused                  Enable -Wunused:imports,privates,locals,implicits,nowarn.
  nonlocal-return         A return statement used an exception for flow control.
  implicit-not-found      Check @implicitNotFound and @implicitAmbiguous messages.
  serial                  @SerialVersionUID on traits and non-serializable classes.
  valpattern              Enable pattern checks in val definitions.
  eta-zero                Usage `f` of parameterless `def f()` resulted in eta-expansion, not empty application `f()`.
  eta-sam                 The Java-defined target interface for eta-expansion was not annotated @FunctionalInterface.
  deprecation             Enable -deprecation and also check @deprecated annotations.
  byname-implicit         Block adapted by implicit with by-name parameter.
  recurse-with-default    Recursive call used default argument.
  unit-special            Warn for specialization of Unit in parameter position.
  multiarg-infix          Infix operator was defined or used with multiarg operand.
  implicit-recursion      Implicit resolves to an enclosing definition.
Default: All choices are enabled by default.