code: def requirements(self):
      if self.settings.os != "Macos":
          # MacOS does not need openblas
          self.requires("openblas/0.3.23@milvus/dev")
          self.requires("libunwind/1.7.2")
  
imports: from conans import ConanFile
label_desc: Use image node_id 2 for calling the MilvusConan obj's underlying member method code with example usage: obj.requirements() without return types