disableKey 
  Sets the state of a KMS key to disabled. This change temporarily prevents use of the KMS key for cryptographic operations.
The KMS key that you use for this operation must be in a compatible key state. For more information about how key state affects the use of a KMS key, see Key states of KMS keys in the Key Management Service Developer Guide.
Cross-account use: No. You cannot perform this operation on a KMS key in a different Amazon Web Services account.
Required permissions: kms:DisableKey (key policy)
Related operations: EnableKey
Eventual consistency: The KMS API follows an eventual consistency model. For more information, see KMS eventual consistency.
Samples
fun main() { 
   //sampleStart 
   // The following example disables the specified KMS key.
kmsClient.disableKey {
    keyId = "1234abcd-12ab-34cd-56ef-1234567890ab"
} 
   //sampleEnd
}