override fun getInheritorsOfSealedClass(
        classSymbol: KtNamedClassOrObjectSymbol
    ): List<KtNamedClassOrObjectSymbol> {
        require(classSymbol.modality == Modality.SEALED)
        require(classSymbol is KtFirNamedClassOrObjectSymbol)

        val inheritorClassIds = classSymbol.firSymbol.fir.getSealedClassInheritors(analysisSession.useSiteSession)

  return null
}

internal fun Headers.Builder.commonBuild(): Headers = Headers(namesAndValues.toTypedArray())

internal fun headersCheckName(name: String) {
  require(name.isNotEmpty()) { "name is empty" }
  for (i in name.indices) {
    val c = name[i]
    require(c in '\u0021'..'\u007e') {
      "Unexpected char 0x${c.charCode()} at $i in header name: $name"
    }
  }
}

internal fun headersCheckValue(

  val parameterNamesAndValues = mutableListOf<String>()
  var s = typeSubtype.range.last + 1
  while (s < length) {
    val parameter = PARAMETER.matchAtPolyfill(this, s)
    require(parameter != null) {
      "Parameter is not formatted correctly: \"${substring(s)}\" for: \"$this\""
    }

    val name = parameter.groups[1]?.value
    if (name == null) {
      s = parameter.range.last + 1

These values are enabled using server's configuration or environment variables.

## Examples

### Configuring connection limit

    override fun substitute(substitutor: KtSubstitutor): KtFirVariableLikeSignature<S> = withValidityAssertion {
        if (substitutor is KtSubstitutor.Empty) return@withValidityAssertion this
        require(substitutor is AbstractKtFirSubstitutor<*>)

        KtFirVariableLikeSubstitutorBasedSignature(token, firSymbol, firSymbolBuilder, substitutor.substitutor)
    }
}

    }

    override fun substitute(substitutor: KtSubstitutor): KtFirFunctionLikeSignature<S> = withValidityAssertion {
        if (substitutor is KtSubstitutor.Empty) return@withValidityAssertion this
        require(substitutor is AbstractKtFirSubstitutor<*>)

        KtFirFunctionLikeSubstitutorBasedSignature(token, firSymbol, firSymbolBuilder, substitutor.substitutor)
    }
}

    repositoryPlugin.deployClassPath()
  }

  private fun createBndRun(workspace: Workspace): Bndrun {
    // Creating the run require string. It will always use the latest version of each bundle
    // available in the repository.
    val runRequireString =
      REQUIRED_BUNDLES.joinToString(separator = ",") {
        "osgi.identity;filter:='(osgi.identity=$it)'"
      }

    val bndEditModel =

    require(keepAliveDuration > 0L) { "keepAliveDuration <= 0: $keepAliveDuration" }
  }

  fun idleConnectionCount(): Int {
    return connections.count {
      it.withLock { it.calls.isEmpty() }
    }
  }

  fun connectionCount(): Int {
    return connections.size
  }

  /**

        ) == null
    }

    override fun isArrayOrPrimitiveArray(type: KtType): Boolean {
        require(type is KtFirType)
        return type.coneType.isArrayOrPrimitiveArray
    }

    override fun isNestedArray(type: KtType): Boolean {
        if (!isArrayOrPrimitiveArray(type)) return false
        require(type is KtFirType)
        return type.coneType.arrayElementType()?.isArrayOrPrimitiveArray == true
    }

## Features requiring API changes

If a PR change requires an API change
* Updates to documentation do not require explicit approval from the Technical Oversight Committee (TOC). This can be
  held off after the release. Hiding/Showing documentation does not require TOC approval.
* Cases for other API changes require TOC approval