}

  @Test
  fun formBody() {
    val formBody: FormBody = FormBody.Builder().build()
    val size: Int = formBody.size
    val encodedName: String = formBody.encodedName(0)
    val name: String = formBody.name(0)
    val encodedValue: String = formBody.encodedValue(0)
    val value: String = formBody.value(0)
    val contentType: MediaType = formBody.contentType()

Use `FormBody.Builder` to build a request body that works like an HTML `<form>` tag. Names and values will be encoded using an HTML-compatible form URL encoding.

=== ":material-language-kotlin: Kotlin"
    ```kotlin
      private val client = OkHttpClient()

      fun run() {
        val formBody = FormBody.Builder()
            .add("search", "Jurassic Park")

}

public final class okhttp3/FormBody$Builder {
	public fun <init> ()V
	public fun <init> (Ljava/nio/charset/Charset;)V
	public synthetic fun <init> (Ljava/nio/charset/Charset;ILkotlin/jvm/internal/DefaultConstructorMarker;)V
	public final fun add (Ljava/lang/String;Ljava/lang/String;)Lokhttp3/FormBody$Builder;
	public final fun addEncoded (Ljava/lang/String;Ljava/lang/String;)Lokhttp3/FormBody$Builder;

}

public final class okhttp3/FormBody$Builder {
	public fun <init> ()V
	public fun <init> (Ljava/nio/charset/Charset;)V
	public synthetic fun <init> (Ljava/nio/charset/Charset;ILkotlin/jvm/internal/DefaultConstructorMarker;)V
	public final fun add (Ljava/lang/String;Ljava/lang/String;)Lokhttp3/FormBody$Builder;
	public final fun addEncoded (Ljava/lang/String;Ljava/lang/String;)Lokhttp3/FormBody$Builder;

    concurrently close an SSL socket. This would have appeared in crash logs as
    `NullPointerException: bio == null`.
 *  Fix: Use plus `+` instead of `%20` to encode space characters in `FormBody`. This was a
    longstanding bug in OkHttp. The fix makes OkHttp consistent with major web browsers.
 *  Fix: Don't crash if Conscrypt returns a null version.