Create a Key Pair with Existing Key Material

This template imports an existing key pair and specifies it when launching an EC2 instance. The `AWS::EC2::KeyPair` resource is used to import the key pair with the `KeyName` property set to 'NameForMyImportedKeyPair' and the `PublicKeyMaterial` property set to the public key material. The `AWS::EC2::Instance` resource is used to launch the EC2 instance with the `ImageId` property set to 'ami-123456789012' and the `KeyName` property set to the `ImportedKeyPair` resource.

AWSTemplateFormatVersion: '2010-09-09'
Description: Cfn Template by CloudAdvisor
Parameters: {}
Resources: {}
Outputs: {}
Conditions: {}
Mappings: {}
Metadata: {}