"never-never" meaning in English

{
  "etymology_text": "Suggesting that the would-be purchaser may never manage to complete the payments and take ownership.",
  "forms": [
    {
      "form": "the never-never",
      "tags": [
        "canonical"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "en",
        "2": "noun",
        "head": "the never-never"
      },
      "expansion": "the never-never",
      "name": "head"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Commonwealth English",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English reduplicated coordinated pairs",
          "parents": [
            "Reduplicated coordinated pairs",
            "Coordinated pairs",
            "Reduplications",
            "Terms by etymology"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "The hire purchase system."
      ],
      "id": "en-never-never-en-noun-XMfmSS18",
      "links": [
        [
          "hire purchase",
          "hire purchase"
        ]
      ],
      "raw_glosses": [
        "(colloquial, Commonwealth) The hire purchase system."
      ],
      "tags": [
        "Commonwealth",
        "colloquial"
      ]
    }
  ],
  "word": "never-never"
}

{
  "etymology_text": "Suggesting that the would-be purchaser may never manage to complete the payments and take ownership.",
  "forms": [
    {
      "form": "the never-never",
      "tags": [
        "canonical"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "en",
        "2": "noun",
        "head": "the never-never"
      },
      "expansion": "the never-never",
      "name": "head"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "Commonwealth English",
        "English colloquialisms",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English reduplicated coordinated pairs",
        "Pages with 1 entry",
        "Pages with entries"
      ],
      "glosses": [
        "The hire purchase system."
      ],
      "links": [
        [
          "hire purchase",
          "hire purchase"
        ]
      ],
      "raw_glosses": [
        "(colloquial, Commonwealth) The hire purchase system."
      ],
      "tags": [
        "Commonwealth",
        "colloquial"
      ]
    }
  ],
  "word": "never-never"
}