Define various object to specify party, company, address and contact.

{
"$id": "https://www.igarment.net/schema/json/v1-0/object-party.json",
"title": "A business related association.",
"description": "Common schema used to define a business partner.",
"$defs": {
  // Party include company information and contact information.
  "party": {
    "type": "object",
    "properties": {
      "company":  { "$ref": "#/$defs/company" },
      "contacts": {
        "type": "array",
        "items": { "$ref": "#/$defs/contact" },
      },
    },
    "required": ["company"]
  },
  // Company object properties
  "company": {
    "type": "object",
    "properties": {
      "name":    { "type": "string" },
      "address": { "$ref": "#/$defs/address" },
      "phone":   { "type": "string" },
      "fax":     { "type": "string" },
      "domain":  { "type": "string" }
    }
  },
  // Address object
  "address": {
    "type": "object",
    "properties": {
      "street":  { "type": "string" },
      "city":    { "type": "string" },
      "state":   { "type": "string" },
      "country": { "type": "string" },
      "zipcode": { "type": "string" }
    }
  },
  // A contact
  "contact": {
    "type": "object",
    "properties": {
      "name":        { "type": "string" },
      "email":       { "type": "string", "format": "email" },
      "irc_address": { "type": "string" }
    },
    "required": [ "name" ]
  }
}
}