Composer dev dependency "nexmo/api-specification" is not found

[SOHELAHMED7]

While running composer install following error is faced:

In Git.php line 478:
                                                                                                                                                                            
  Failed to execute git clone --mirror -- 'https://[email protected]/Nexmo/api-specification.git' '....composer/cache/vcs/https---github.com-Nexmo-ap  
  i-specification/'                                                                                                                                                         
                                                                                                                                                                            
  Cloning into bare repository '....composer/cache/vcs/https---github.com-Nexmo-api-specification'...                                                                   
  remote: Repository not found.                                                                                                                                             
  fatal: repository 'https://github.com/Nexmo/api-specification.git/' not found     

[SOHELAHMED7]

Temporary work-around to this issue and #209 :

• delete composer.lock file
• remove "apis-guru/openapi-directory" and "nexmo/api-specification" dependencies from Composer file
• run composer install

Although 1 test will fail while running phpunit but Composer will process downloading and installing rest of the dependencies.